1. Diamond DA20-C1 OH-KAT

2. Diamond DA20-C1 OH-KAT Engine and propeller
Continental IO240-B, naturally aspirated, 4 cylinder, 4 stroke-engine, fuel injected, horizontally opposed, air cooled.
Propeller drive direct from engine crankshaft.
Displacement: cu.in. (3.9 liters)
Output Power: 125 hp (93.2 kW) at 2800 RPM
PROPELLER
Two-bladed fixed pitch propeller, manufactured by Sensenich
Model W69EK-63
Diameter: 5 ft 9 in (1.752 m)
FUEL
Approved Fuel Grades: AVGAS 100 or 100LL
Total Fuel Capacity: 93 liters
Usable Fuel: 91 liters
Unusable Fuel: 2 liters
OIL
Aeroshell 5W50
Capacity: MAX 6qt MIN 4qt

3. Diamond DA20-C1 OH-KAT Engine and propeller limitations
Max t/o and continuous operation power rpm
Oil Pressure
Minimum : 10 psi (1.5 bar)
Maximum : 100 psi (6.9 bar)
Ambient temperature below 32ºF (0ºC), Full power operation oil pressure 70 psi max
Normal Operating : 30 psi (2.1 bar) to 60 psi (4.1 bar)
Oil Temperature
Minimum : 75°F (24°C)
Full power operation, oil pressure normal 100ºF (38ºC)
Maximum : 240ºF (115°C)
Cylinder Head Temperature
Maximum 460°F (238°C)
Minimum 240°F (115°C) takeoff and descent

4. Diamond DA20-C1 OH-KAT Weights
Maximum Ramp Weight : 753 kg (1660 lbs)
Maximum Take-off Weight : 750 kg (1653 lbs)
Maximum Landing Weight : 750 kg (1653 lbs)
Empty Weight : 523kg (1153 lbs), check actual!!!
Maximum Baggage 20 kg (44 lbs)
Full fuel weight (93l) 67kg
Usable load with full tank 163kg, check actual!!!

5. Diamond DA20-C1 OH-KAT Speeds
Va Maneuvering Speed 106
Do not make full or abrupt control movement above this speed. Under certain conditions the airplane may be overstressed by full control movement.
Vfe Maximum Flap Extended Speed
Vfe (T/O) 100
Do not exceed this speed with flaps in take-off position.
Vfe (LDG) 78
Do not exceed this speed with flaps in landing position.
Vno Maximum Structural Cruising Speed 118
Do not exceed this speed except in smooth air, and then only with caution.
Vne Never Exceed Speed 164
Do not exceed this speed in any operation.

6. Diamond DA20-C1 OH-KAT Permissible Utility Category Maneuvers
All normal flight maneuvers
Lazy Eight’s Entry speed: 116 KIAS
Chandelles: Entry speed: 116 KIAS
Steep turns in which the angle of bank does not exceed 60
Spinning (with Wing Flaps UP)
Stalls (except whip stalls)
Intentional Side Slips
Positive G flaps up + 4.4, with flaps + 2.0
Negative G flaps up - 2.2, with flaps 0

7. Diamond DA20-C1 OH-KAT MEL
Flights are permissible in accordance with DAY visual flight rules.
Minimum Equipment, Flight and Navigation Instruments:
Airspeed Indicator
Altimeter
Magnetic Compass
Minimum Equipment, Powerplant Instruments:
Fuel Quantity Indicator
Fuel Pressure Indicator
Oil Pressure Indicator
Oil Temperature Indicator
Exhaust Gas Temperature
Cylinder Head Temperature Indicator
Tachometer
Voltmeter
Ammeter
Generator Warning Light
Finland CAA requirements on top of this!

8. Diamond DA20-C1 OH-KAT Emergincy speeds
Engine failure after take-off with flaps in T/O position 58
Maneuvering Speed 106
Airspeed for best glide angle Maximum Gross Weight Wing Flaps in CRUISE position 1720 lbs (780 kg) 73
Precautionary Landing (with power and Wing Flaps in landing position) 52
Emergency landing with engine off (Wing Flaps in T/O position) 58
Emergency landing with engine off (Wing Flaps in LDG position) 52
Emergency landing with engine off (Wing Flaps CRUISE) 62

9. Diamond DA20-C1 OH-KAT Normal operation speeds
TAKE-OFF
Climb Speed during normal take-off for 50 ft (15 m) obstacle 58
Best Rate-of-Climb speed at sea level vy. Wing Flaps CRUISE 75
Best Angle-of-Climb speed at sea level vx. Wing Flaps CRUISE 60
Best Rate-of-Climb speed at sea level vy. Wing Flaps T/O 68
Best Angle-of-Climb speed at sea level vx. Wing Flaps T/O 57
LANDING
Approach speed for normal landing. Wing Flaps LDG 52
Balked landing climb speed. Wing Flaps LDG 52
Maximum demonstrated crosswind speed during take-off and landing 20
CRUISE
Maximum permissible speed in rough air Vno 118
Maximum permissible speed with full control surface deflections Va 106
Maximum permissible speed with Wing Flaps in T/O Position (Vfe T/O) 100
Maximum permissible speed with Wing Flaps in LDG Position (Vfe LDG) 78

10. Diamond DA20-C1 OH-KAT Avionics and cockpit
Audio panel PMA6000
COM/NAV radio King KX155
Garmin GNS420 GPS
Transponder Bendix/King KT 76A
NAV selector (GPS/VOR)
NAV indicator
Parking brake
Cabin heat control
Mixture and throttle levers
Alternative air selector
Flight control lock installation

11. Diamond DA20-C1 OH-KAT Construction and systems
GFRP-fuselage and GFRP-sandwich wing
The ailerons and elevator are actuated via push rods. The rudder is controlled using control cables.
The flaps have three positions, CRUISE, T/O (take-off), LDG (landing) and are electrically operated.
Elevator forces may be balanced using the electric trim system.
The landing gear system consists of the two main landing gear wheels mounted to aluminum spring struts and a 60° castering nose wheel. The suspension of the nose wheel is provided by an elastomer spring.

12. Diamond DA20-C1 OH-KAT Fuel system
The aluminum fuel tank is located behind the seats, below the baggage compartment
A grounding stud is located on the under side of the fuselage near the trailing edge of the left hand wing.
The tank has an integral sump which must be drained prior to each flight, by pushing up on the brass and rubber tube.
The electric fuel pump primes the engine for engine starting (Prime ON) and is used for low throttle operations (Fuel Pump ON). When the pump is OFF, fuel flows through the pump's internal bypass.
Closing the fuel shut-off valve, located either on the aft side of the firewall or at the maintenance drain manifold, will cause the engine to stop within a few seconds.
Fuel quantity is measured with Fuel Dipstick

13. Diamond DA20-C1 OH-KAT Pitot static and stall warning systems
The pitot pressure is measured on the leading edge of a calibrated probe below the left wing. The static pressure is measured by the same probe.
The pitot static pressure probe should be protected whenever the aircraft is parked to prevent contamination.
When the airspeed drops below 1.1 times the stall speed, a horn sounds in the left instrument panel. The horn grows louder as the speed approaches the stall speed. The horn is activated by air from a suction hose that connects to a hole in the leading edge of the left wing. The hole has a red circle around it. The stall warning hole should be plugged whenever the aircraft is parked to prevent contamination.

14. Diamond DA20-C1 OH-KAT Ground handling
The airplane is most easily and safely maneuvered by hand with the tow-bar attached to the nose wheel.
If the aircraft is towed forward without using the tow-bar, the nose-wheel will follow the movement of the airplane. It is recommended that the tow-bar be used to pull the aircraft forward.
If any additional assistance is required, the DA 20 may only be pushed on the trailing edge of the wing tip.
By following a simple procedure it is very easy to move the airplane backwards.
1. Push down with one hand on the aft section of the fuselage near the vertical stabilizer, to lift the nose wheel.
2. Push back on the leading edge of the horizontal stabilizer, close to its center.
Using this technique the DA 20 be turned and pushed backward. If additional assistance is required, a second person may push on the leading edge of the wings.

15. Diamond DA20-C1 OH-KAT Thank You!
Jani Lemberg
Lemberg Aviation Oy